(AP) — Federal investigators say a passenger door on a Boston subway car did not function properly when a man got his arm stuck in it and was dragged to his death last month. The National ...

Note: This is the second part of Ray’s July/August column of the same name. Q: Is there a standard or common convention for naming doors in an access control system? A: There is no single standard, or ...

Mechanical locks secure doors as either deadbolts or door-handle devices. Keys serve as the means to unlock these mechanical locks, and possessing a working key determines who can access secured areas ...

How to understand the needs of your school and secure it with advanced technology Illustration #1: Security Pyramid shows the relationship of progressive levels of security. Today, locks and keys ...

Districts across the country are facing similar problems in regards to visitor management, and front entrance safety and security. Many school sites were constructed prior to the 1999 Columbine ...

A security researcher says the default password shipped in a widely used door access control system allows anyone to easily and remotely access door locks and elevator controls in dozens of buildings ...